Shears.



W. A. KILWIER.

SHEARS.

APPLICATION FILED MAR. 8, I915.

Pfitentd Nov. 2, 1915.

3 SHEETS-SHEET I.

W. A. KILMER.

SHiEARS. APPLICATION FILED MAR. 8, I915.

Patented Nov. 2 1915.

3 SHEETS-SHEET 2.

W. A. KILIVIER.

' SHEARS.

APPLICATION FILED IIIAII. 8. 1915.

1 1 5& 5QUI Patented Nov. 2, 1915.

3 SHEETSSHEET 3.

did

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ratrnn r UFFTEE.

WILLIAM AUGUSTUS KILMER, OF DE KALB, ILLINOIS, ASSIGNOR TO THE AMERICAN STEEL & WIRE COMPANY OF NEW- JERSEY, OF HOIBOKEN, JERSEY," A CORPORA- TION 0F JSTEU JERSEY.

asses.

SHEAJRS.

Patented Nov. 2, 1215..

I I Application filed March 8, 1915. Serial No. 13,024. 1

To all whom it may concern:

Be it known that 1, WILLIAM A. KILMER, a citizen 'of the United States, and resident of De Kalb, in the county of Dekalb and State of Illinois, have invented certain new and useful Improvements in Shears, of which the following is a specification.

My invention relates to wire fabric machines and has particular reference to a novel shear mechanism for use in connection therewith.

A device such as here disclosed is intended for use in connection with a wire fabric machine such as disclosed in my co'pending application, Serial No. 13,022, filed concur rently herewith.

An object in the construction of such a shear is .to provide means for intermittently actuating the shear, such means insuring but a-single reciprocation of theshear and even though the manual control he maintained in its operating position the parts will makebut one revolution without, a further actuation'of the manual-control-means.

A. further object is to simplify, the construction of shears of this type and to provide against'the possibility of error or damage to the operator or machine due to unskilled handling of'th'same.-. It will be understood that this idea of providing m'echa nism shall cause but a single actuation of' the driven elements without a repeated actus ation of the manual control is applicableto many other types of machine such as punches, presses, etc. 1

The invention will be more readily understood by reference to the accompanying;

drawings, wherein,

Figure l is a plan view of a- 'fabric machine. similar to that disclosed in my copending application referred to and to which my shear is applied; Fig. 2,is a fragmentary side elevation of the sheanmechanism and the controlling clutch; Fig. 3 is a section on the line 3-3 of Fig. 2; Fig. 4 is a'section on the line M of Fig. 2; Fig. 5 is a section on' the line 55 of Fig. 4:, and Fig.

6 is a section on the line 66 of Fig. 5.

Referring more particularly to Fig. 1, it will be seen that the wire fabric machine may include a drum 10, on which the fabric" is formed, power being applied for the operation of this mechanism through the tight and loose pulleys 11. Mounted alongside the frame of this machine is a shaft 12, having-a handle 13, on one end thereof. Mounta handle 15,

ed on the shaft 12, is a sleeve lei, alsohaving By reason of interengaging lugs on the shaft and sleeve, a movement of the handle 15 on the sleeve imparts motion to the shaft 12. 'Ri'gid'with the sleeve 14, is

a belt shifter 16, by means of which the belt supplying power to the fabric machine may be shifted. The shaft 12 connects by bevel gearing to a shaft 17, shown in Figs. 2 and 4:, this shaft serving to control the manually best shown in Figs. 2 and 3, may consist in operable clutch for the shear. The shear, as

a fixed lower-blade 18, and a reciprocable upper blade 19, the reciprocation of the upper blade being caused by the. eccentric 20, mounted on the shear shaft 21. 'Poweris applied t6 the shear through the constantly rotating pulley 22, this pulleyhaving a sleeve 23," rigid therewith, a disk 24L, being secured to the sleeve. This disk is provided with a plurality of notches 25, on its face with which notches'a sliding clutch pin 26,

'best shown in Fig. 5, is adapted to engage. It wilhb ef. understood that the disk 24, is

constantly rotated and that the pin 26, is maintained out of engagement therewith with a wedge-shaped member 27, mounted on the upper endof a 'stem or shaft 28, and

urged upwardly by a spring 29. The lower en d of the stem 28, is provided witha pair of collars ,30,--between which a yoke 31, en-

gages. This yoke is loosely mounted on the shaft 17. Pivoted to the yoke member is a .pawlior arm 32, one end of the pawl engag ing a disk 34;, which 'is rigid with the shaft 17. This disk is provided with a notch 35, on' its periphery.

It will beseen that, following rotation of the shaft in the direction of the arrow in Fig. 4:, the yoke member 31, is forced downwardly due to cooperation of the disk with the pawl 32, secured to the yoke and that this motion is transmitted to the stem 28, and

at the wedge member 27, is lowered. This releases the clutch pin 26, and permits it to engage with a recess 25, in the disk 24. This connects the constantly moving driving element with the driven shaft. In orderto prevent more than a sihglerevolution of the;

this projection extending into the plane of an oppositely disposed wedge portion 37, on the member 27.

Secured to the shaft 21, is a cam 38, which engages with an arm 39, having an antifriction roll 40, at its extremity. A rod 41, connects this arm to one end ofthe pawl 32. It will be seen that. upon rotation of theshaft 21, the cam will cause the depression of the arm 39, and consequently the actuation of the pawl 32. This releases the stem .28, from the manual control and the spring 29, tends to forcevthe wedge memberv 27, upwardly bringing the wedge portion 37, thereof into the plane of the wedge portion on the part 36. Thereupon as rotation continues the pin Will be withdrawn from clutching engagement with the disk 24. The pin cannot again be released and permitted to enter into clutching engagement without a reactuation of the shaft 17 which is under the control of the operator, for the reason that the point of the pawl 32, will lie to the rear of the notch 35. Therefore the operator may hold the control handle in operating position for as long a time as desired and but one actuation of the shear will fol low. As a means for insuring'the stoppage actuate the shear. If desired a stripping bar 45, may be mounted against the upper knife 19, as best shown in Fig. 3. For light fabric this will be found to be of advantage. It will be understood of course that the manual control here described might be replaced by electric or other automatic means for shearing stated lengths of fabric with out attention on the part of "the operator.

I claim: 1. In a shear, the combination of a constantly moving shaft, a shearactuating shaft, a clutch for engaging said shafts,

means for actuating said clutch, said means including a plunger having a cam on one end thereof, manual means for actuating said plunger and permitting said clutch to engage,"and a cam carried by said shear shaft and engaging said clutch to withdraw the same after one revolution, substantially as described.

2. In a shear for Wire fabric machines, the

combination of fabric forming mechanism,

shearing mechanism, means for simultaneously interrupting the action of the fabric forming mechanism and actuating the shear mechanism, said means for actuating the shear mechanism including constantly movmg and intermittently movable elements, and a clutch between said elements, substantially as described.

tently moving elements after one revolution thereof,'and a second camcarried by the elements thereby set into operation for withdrawing said clutch member after onerevolution of the parts, substantially as described. i

4. In a shear 'mechanism, the combination of a driving shaft and a driven shaft,-

a clutch between said shafts, said clutch including a sliding pin, a hatchet cam adapted to maintain said pin out of clutching engagement, aspring advanced stem on said hatchet-cam, means for moving said stem andwithdrawing said hatchet cam, a pawl connecting said stem to said moving means, a cam on the driving shaft, and means connecting said cam to said pawl. for releasing said hatchet cam after one revolution of saiddriving shaft, substantially as described.

5. In a device of theclass described, the combination of a driving shaft and a driven shaft, a clutch between said shafts, manually operable means for actuating said clutch, automatic means actuated by' the moving elements for withdrawing said clutch after one revolution of the moving parts and for preventing further actuation of the moving parts without a second actuation of said manual means and a positive stop for said moving parts after one revolution, substantially as described.

6. In a device of the class described, the combination of a driving shaft'and a driven shaft, a clutch between said shafts, means including a hatchet cam for permitting actuation of said clutch, means actuated by the moving parts for withdrawing said clutch, and means preventing a second actuation of the clutch without a-second actuation of the manually operable means, said last'named means including a pawl and notched disk, substantially as described.

Signe'd'at De Kalb, Illinois, this 25th da of February, 1915.

WILLIAM AUGUSTUS KILMER.

Witnesses:

F.- S. LUNEY, J. A. ROBINSON. 

